The victim of the fatal stabbing in Newbury Park at the weekend has been named by police as Imran Isat.
Two men who had been arrested in connection with his death have been released without further action, Scotland Yard said.
Despite treatment from London Ambulance Service paramedics, he was pronounced dead at the scene.
A post-mortem examination on Sunday (March 20) found Mr Isat’s cause of death was shock and haemorrhage from a stab wound to the chest.
Following the release of the two men, homicide detectives from the Met’s specialist crime command have renewed appeals for information and witnesses.
Mr Isat’s family are being supported by specialist officers, according to the Met Police.
Anyone with information can contact police on 101, quoting CAD466/19Mar.
Alternatively, information can provided anonymously to the independent charity Crimestoppers on 0800 555 111.
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